<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <!-- post传递的参数不可见 -->
    <form action="http://localhost:8080/login" method="POST">   
        <p><input type="text" name="username" placeholder="请输入用户名"></p>
        <p><input type="password" name="pwd" placeholder="请输入密码"></p>
        <p><input type="submit"></p>
    </form>   
</body>
</html>